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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
using System;
using System.Collections.Generic;
using System.IO;
namespace QtVsTools.Core
{
public class QMakeConf
{
private Dictionary<string, string> Properties { get; } = new();
public string this[string name] => Properties.TryGetValue(name, out var value) ? value : null;
public string QMakeSpecDirectory { get; }
public QMakeConf(QtBuildToolQuery query)
{
var qtPrefix = query["QT_INSTALL_PREFIX"];
if (string.IsNullOrEmpty(qtPrefix))
throw new KeyNotFoundException("qmake error: no value for QT_INSTALL_PREFIX");
var qtArchData = query["QT_INSTALL_ARCHDATA"];
if (string.IsNullOrEmpty(qtArchData))
throw new KeyNotFoundException("qmake error: no value for QT_INSTALL_ARCHDATA");
var qmakeXSpec = query["QMAKE_XSPEC"];
if (string.IsNullOrEmpty(qtArchData))
throw new KeyNotFoundException("qmake error: no value for QMAKE_XSPEC");
QMakeSpecDirectory = Path.Combine(qtPrefix, qtArchData, "mkspecs", qmakeXSpec);
var qmakeConf = Path.Combine(QMakeSpecDirectory, "qmake.conf");
if (!File.Exists(qmakeConf)) {
// Check if this is a shadow build of Qt.
qtPrefix = query["QT_INSTALL_PREFIX/src"];
if (string.IsNullOrEmpty(qtPrefix))
throw new KeyNotFoundException("qmake error: no value for QT_INSTALL_PREFIX/src");
qtArchData = query["QT_INSTALL_ARCHDATA/src"];
if (string.IsNullOrEmpty(qtArchData))
throw new KeyNotFoundException("qmake error: no value for QT_INSTALL_ARCHDATA/src");
QMakeSpecDirectory = Path.Combine(qtPrefix, qtArchData, "mkspecs", qmakeXSpec);
qmakeConf = Path.Combine(QMakeSpecDirectory, "qmake.conf");
}
if (!File.Exists(qmakeConf))
throw new FileNotFoundException("qmake.conf expected at " + qmakeConf + " not found");
ParseFile(qmakeConf);
}
private void ParseFile(string fileName)
{
if (!File.Exists(fileName))
return;
using var streamReader = new StreamReader(fileName);
while (streamReader.ReadLine() is { } line) {
line = line.Trim();
var commentStartIndex = line.IndexOf('#');
if (commentStartIndex >= 0)
line = line.Remove(commentStartIndex);
var pos = line.IndexOf('=');
if (pos > 0)
ProcessKeyValue(line, pos);
else if (line.StartsWith("include", StringComparison.Ordinal))
ProcessInclude(fileName, line);
}
streamReader.Close();
RemoveValue("QMAKE_LFLAGS_CONSOLE", "@QMAKE_SUBSYSTEM_SUFFIX@");
RemoveValue("QMAKE_LFLAGS_WINDOWS", "@QMAKE_SUBSYSTEM_SUFFIX@");
}
private void ProcessKeyValue(string line, int pos)
{
var op = "=";
if (line[pos - 1] == '+' || line[pos - 1] == '-')
op = line[pos - 1] + "=";
var lineKey = line.Substring(0, pos - op.Length + 1).Trim();
var lineValue = ExpandVariables(line.Substring(pos + 1).Trim());
switch (op) {
case "+=" when Properties.ContainsKey(lineKey):
Properties[lineKey] += lineValue;
break;
case "-=":
foreach (var value in lineValue.Split(' ', '\t'))
RemoveValue(lineKey, value);
break;
default:
Properties[lineKey] = lineValue;
break;
}
}
private void ProcessInclude(string fileName, string line)
{
var pos = line.IndexOf('(');
var posEnd = line.LastIndexOf(')');
if (pos <= 0 || pos >= posEnd)
return;
var filenameToInclude = line.Substring(pos + 1, posEnd - pos - 1);
var saveCurrentDir = Environment.CurrentDirectory;
Environment.CurrentDirectory = new FileInfo(fileName).Directory?.FullName ?? "";
var fileInfoToInclude = new FileInfo(filenameToInclude);
if (fileInfoToInclude.Exists)
ParseFile(fileInfoToInclude.FullName);
Environment.CurrentDirectory = saveCurrentDir;
}
private string ExpandVariables(string value)
{
var pos = value.IndexOf("$$", StringComparison.Ordinal);
while (pos != -1) {
var startPos = pos + 2;
var endPos = startPos;
// at the moment no handling of qmake internal variables
if (value[startPos] != '[') {
for (; endPos < value.Length; ++endPos) {
if ((char.IsPunctuation(value[endPos]) && value[endPos] != '_')
|| char.IsWhiteSpace(value[endPos])) {
break;
}
}
if (endPos > startPos) {
var varName = value.Substring(startPos, endPos - startPos);
if (!Properties.TryGetValue(varName, out var varValue))
varValue = "";
value = value.Substring(0, pos) + varValue + value.Substring(endPos);
endPos = pos + varValue.Length;
}
}
pos = value.IndexOf("$$", endPos, StringComparison.Ordinal);
}
return value;
}
private void RemoveValue(string key, string valueToRemove)
{
if (!Properties.TryGetValue(key, out var value))
return;
int pos;
do {
pos = value.IndexOf(valueToRemove, StringComparison.Ordinal);
if (pos >= 0)
value = value.Remove(pos, valueToRemove.Length);
} while (pos >= 0);
Properties[key] = value;
}
}
}
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